I am looking at the compendium and trying to find all the published poisons for 4 E. it only lists 18 or 19. And none of them from the hero of shadows book? Where can I get a complete list.. Also where do they list the ingredients and procedures for making said poisons ?

Unfortunately as far as I am aware there is no complete list of poisons anywhere, but I would love to be proven wrong in this instance

There are a few in Heroes of Shadow, and several of the alchemy recipes in the Eberron Player's handbook are poisonous. Otherwise there are a few poisonous items scattered among various Dragon Magazine articles.

The problem is that poisons were implemented very inconsistently in 4E with wildly different rules; from Athasian Minstrel theme powers (which seem to require no material poison at all, somehow) to alchemical recipes to Heroes of Shadow assassin poisons...for some reason, they took suggestions from people with wildly different ideas on how poisons could look and used them ALL.